/*
 * jQuery UI Effects Bounce 1.6
 *
 * Copyright (c) 2008 AUTHORS.txt (http://ui.jquery.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Effects/Bounce
 *
 * Depends:
 *	effects.core.js
 */
(function($) {

    $.effects.bounce = function(o) {

        return this.queue(function() {

            // Create element
            var el = $(this), props = ['position', 'top', 'left'];

            // Set options
            var mode = $.effects.setMode(el, o.options.mode || 'effect'); // Set Mode
            var direction = o.options.direction || 'up'; // Default direction
            var distance = o.options.distance || 20; // Default distance
            var times = o.options.times || 5; // Default # of times
            var speed = o.duration || 250; // Default speed per bounce
            if (/show|hide/.test(mode))
                props.push('opacity'); // Avoid touching opacity to prevent clearType and PNG issues in IE

            // Adjust
            $.effects.save(el, props);
            el.show(); // Save & Show
            $.effects.createWrapper(el); // Create Wrapper
            var ref = (direction == 'up' || direction == 'down') ? 'top' : 'left';
            var motion = (direction == 'up' || direction == 'left') ? 'pos' : 'neg';
            var distance = o.options.distance || (ref == 'top' ? el.outerHeight({margin: true}) / 3 : el.outerWidth({margin: true}) / 3);
            if (mode == 'show')
                el.css('opacity', 0).css(ref, motion == 'pos' ? -distance : distance); // Shift
            if (mode == 'hide')
                distance = distance / (times * 2);
            if (mode != 'hide')
                times--;

            // Animate
            if (mode == 'show') { // Show Bounce
                var animation = {opacity: 1};
                animation[ref] = (motion == 'pos' ? '+=' : '-=') + distance;
                el.animate(animation, speed / 2, o.options.easing);
                distance = distance / 2;
                times--;
            }
            ;
            for (var i = 0; i < times; i++) { // Bounces
                var animation1 = {}, animation2 = {};
                animation1[ref] = (motion == 'pos' ? '-=' : '+=') + distance;
                animation2[ref] = (motion == 'pos' ? '+=' : '-=') + distance;
                el.animate(animation1, speed / 2, o.options.easing).animate(animation2, speed / 2, o.options.easing);
                distance = (mode == 'hide') ? distance * 2 : distance / 2;
            }
            ;
            if (mode == 'hide') { // Last Bounce
                var animation = {opacity: 0};
                animation[ref] = (motion == 'pos' ? '-=' : '+=') + distance;
                el.animate(animation, speed / 2, o.options.easing, function() {
                    el.hide(); // Hide
                    $.effects.restore(el, props);
                    $.effects.removeWrapper(el); // Restore
                    if (o.callback)
                        o.callback.apply(this, arguments); // Callback
                });
            } else {
                var animation1 = {}, animation2 = {};
                animation1[ref] = (motion == 'pos' ? '-=' : '+=') + distance;
                animation2[ref] = (motion == 'pos' ? '+=' : '-=') + distance;
                el.animate(animation1, speed / 2, o.options.easing).animate(animation2, speed / 2, o.options.easing, function() {
                    $.effects.restore(el, props);
                    $.effects.removeWrapper(el); // Restore
                    if (o.callback)
                        o.callback.apply(this, arguments); // Callback
                });
            }
            ;
            el.queue('fx', function() {
                el.dequeue();
            });
            el.dequeue();
        });

    };

})(jQuery);
